Oh my goodness, if you want a thriller that you won’t be able to put down, this is your book. I stayed up until 4am one night just to finish it. Elements remind me a lot of Gone Girl. The main character, Riley, grows up thinking that her older sister Lisa committed suicide. After her father passes away, further details unwind and we learn that the older sister may still be alive. I don’t want to spoil anything for you but there are tons of great plot twists… just when you think you’ve guessed it, another twist arises. I really, really loved this one!